A compact low-power linear-in-dB CMOS AGC

Author

Kui Zhang ; Sheng-Xu Wang ; Jun-Yu Shi ; Yong Liu ; Li-Ming Si ; Xin Lv

Author_Institution

Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

This paper presents a low-power and compact automatic gain control circuit which consumes only 1.3 mW and occupies only 0.008 mm² fabricated in TSMC 0.18-μm CMOS technology. The core of the proposed AGC is a variable gain amplifier (VGA) implemented by Gilbert cells and an exponential function circuit for dB linearity of gain control. The dynamic range of the AGC is from -10 dB to 50 dB. The operation frequency is only 10 MHz, but the AGC maintains 3 dB bandwidth wider than 35 MHz throughout its gain range. The constant time of the AGC loop is 5 μs.

Keywords

CMOS integrated circuits; amplifiers; automatic gain control; low-power electronics; Gilbert cells; TSMC CMOS technology; VGA; compact automatic gain control circuit; exponential function circuit; gain -10 dB to 50 dB; low-power automatic gain control circuit; power 1.3 mW; size 0.008 mm; size 0.18 mum; time 5 mus; variable gain amplifier; Abstracts; CMOS integrated circuits; Gain control; Mobile communication; Multiaccess communication; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021473

Filename

7021473